Home / 1,615.19-2,228.96-916.57

Finding the Fourth Proportional to 1,615.19, 2,228.96 and 916.57

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Solution

The fourth proportional to 1,615.19, 2,228.96 and 916.57 is: 1,264.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.19 : 2,228.96 = 916.57 : x
  2. Step 2: Convert to fraction form
    1,615.19/2,228.96 = 916.57/x
  3. Step 3: Cross multiply
    1,615.19x = 2,228.96 × 916.57
  4. Step 4: Simplify right side
    1,615.19x = 2,042,986.72
  5. Step 5: Solve for x
    x = 2,042,986.72/1,615.19
  6. Step 6: Final answer
    x = 1,264.86

Related Problems

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.